A reporter watches Zhang Daqian's work during the preview of the solo exhibition, Zhang Daqian: The Master in Hong Kong, South China, Oct 11, 2019. In commemoration of the 120th anniversary of Zhang Daqian's birthday, Sotheby's presented the exhibition From Oct 12 to Nov 9 at Sotheby's Hong Kong Gallery. The exhibition features nearly 60 paintings sourced from the artist's family and private collectors around the world.[Photo/Xinhua]